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问题 多项选择题

闸机按安装位置和功能不同可分为（）等。

A.入站闸机

B.出站闸机

C.双向闸机

D.特殊通道闸机

E.三杆式

答案

参考答案：A, B, C, D

问答题 简答题

说明活塞式空压机的工作原理
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填空题
填空题。
interest, with,  amaze,  care,  life,  look, many,  surprise,  kill,  they
1. Lots of  ________ things happen every day.
2. Lily is a good girl, she always listens to her teacher ________ in class .
3. There is no plant life ________ air or water.
4. Elephants and whales are the largest ________ animals on land.
5. After you tell me about your school, I know ________ about it.
6. Neighbours were ________ to find the old man dead in his bedroom.
7. My little sister is fond of ________ after her baby cat.
8. This kind of frog is poisonous enough ________ about 2, 200 people.
9. The postcards belong to Tom and Daniel's, they are ________.
10. After reading the storybook, I find it very ________.
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